Angular momentum

  • Thread starter phymatter
  • Start date
  • #1
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if two circular discs of different radius and angular velocity are brought togather , they experience friction and finally there is no slipping between them , why is the total angular momentum not conserved in this case ? there is no eternal torque , friction is an internal force of the system !!!!!!
please help!!!!!!!!!!!
 

Answers and Replies

  • #2
rcgldr
Homework Helper
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Angular momentum will be preserved, but not angular energy, some of which is converted into heat by the friction.
 

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